/*
 * Copyright (C) 2019 ByteDance Inc
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.bytedance.scene.utlity;

import static androidx.annotation.RestrictTo.Scope.LIBRARY;

import androidx.annotation.NonNull;
import androidx.annotation.RestrictTo;

/**
 * @hide
 */
@RestrictTo(LIBRARY)
public class TaskStartSignal {
    private boolean mStarted;
    private Runnable mRunnable;

    public void start() {
        ThreadUtility.checkUIThread();
        if (this.mStarted) {
            return;
        }
        this.mStarted = true;
        if (this.mRunnable != null) {
            this.mRunnable.run();
        }
    }

    public void setRunnable(@NonNull Runnable runnable) {
        ThreadUtility.checkUIThread();
        if (this.mRunnable != null) {
            throw new IllegalStateException("TaskStartSignal setRunnable is already set");
        }
        this.mRunnable = runnable;
    }

    public void clearRunnable() {
        ThreadUtility.checkUIThread();
        this.mRunnable = null;
    }

    public boolean isStarted() {
        return this.mStarted;
    }

    public void cancel() {

    }
}